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（江蘇科技大學(xué)土木工程與建筑學(xué)院， 鎮(zhèn)江 212003）

［摘要］為了研究摻鋼渣再生骨料自密實(shí)混凝土的工作性能及鋼渣摻量對(duì)抗壓強(qiáng)度的影響，通過(guò)與無(wú)鋼渣再生骨料自密實(shí)混凝土的對(duì)比試驗(yàn)，研究了不同磨細(xì)鋼渣取代率（10%，20%，30%，40%，50%）對(duì)再生骨料自密實(shí)混凝土抗壓強(qiáng)度的影響。試驗(yàn)結(jié)果表明：隨著鋼渣取代水泥量增大，坍落擴(kuò)展度先降低后提高，T500時(shí)間先長(zhǎng)后短，間隙通過(guò)性先好后差，拌合物離析率同樣先降低后提高，混凝土28d抗壓強(qiáng)度不斷降低。采用15%的粉煤灰和10%的鋼渣取代水泥制備出了C40強(qiáng)度等級(jí)混凝土，為今后研究復(fù)摻鋼渣對(duì)再生骨料自密實(shí)混凝土性能的影響提供基礎(chǔ)。

［關(guān)鍵詞］工作性能； 抗壓強(qiáng)度； 鋼渣； 自密實(shí)混凝土

中圖分類(lèi)號(hào)：TU528文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2016)15-0052-04

Experimental study on workability and compressive strength of self-compacting concrete with recycled aggregate of steel slag

Diao Zikun, Pan Zhihong, Ma Jian, Gao Zhongyang, Qiu Tao

(Jiangsu University of Science and Technology,School of Civil Engineering and Architecture, Zhenjiang 212003, China)

Abstract:In order to study the workability of self-compacting concrete with recycled aggregate of steel slag and the influence of steel slag on compressive strength, comparison experiment was conducted on self-compacting concrete with and without steel slag. Influence of different substitution rates (10%, 20%, 30%, 40%, 50%) of levigated steel slag on compressive strength of self-compacting concrete with recycled aggregate was studied. Experimental results show that with increase of steel slag replacing cement quantity, the slump spread degree decreases first and then increases. Time of T500 is long at first and then is short, and passing quality through gaps is first good and then poor. Mixture segregation rate also decreases at first and then increases. The 28d compressive strength of the concrete continues to reduce. The concrete with C40 strength grade is made from 15% fly ash and 10% steel slag replaced cement, providing the basis for the future research of influence of steel slag mixture on performance of self-compacting concrete with recycled aggregate.

Keywords:workability； compressive strength； steel slag； self-compacting concrete

*江蘇省研究生實(shí)踐創(chuàng)新計(jì)劃（SJLX_0496），江蘇省高校自然科學(xué)研究項(xiàng)目（14KJB560006），江蘇省本科生創(chuàng)新計(jì)劃（201413991003Y），江蘇科技大學(xué)青年教師科研項(xiàng)目（112110142），江蘇省研究生科研實(shí)踐計(jì)劃（YSJ14S-18）。

作者簡(jiǎn)介：刁子坤，碩士研究生，Email：dzk_129@qq.com。